JPH03204357A - Weather strip for automobile - Google Patents

Abstract

PURPOSE:To obtain a sure and highly reliable sealing effect and prevent the entrance of water and dust by providing a projection part for regulating the tilting position on the back surface of the holding lip of a seesaw lip body or the inner surface of one outer side piece in the holding lip tilting direction. CONSTITUTION:When a welt 1 is pushed into a standing flange part 10, a support lip 4, a holding lip 7, and each support lip 5, 6 are successively cambered upward to support both side surfaces 10a, 10b of the flange part, and also, the whole body of a seesaw lip body 6 is tilted with a connecting part 9 as a supporting point in accordance with the cambering of the holding lip 7. At that time, the further tilt of the holding lip 7 is regulated in a determined position where the back surface 7a bumps against a projection part 11. Thus, the excess rotation of the whole seesaw lip body 6 is regulated, the top end part 7a of the holding lip 7 is strongly pressed into contact with the outer side surface 10 of the flange part 10 by the elastic spring reaction of the projection part 11 to bring the holding lip into closely adhered state, and the top end part 8a of a sub-lip 8 is also uniformly pressed into contact with a vehicle body opening end surface 10c to bring the sub-lip 8 into closely adhered state.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an improvement in an automobile weather strip that seals, for example, between an opening edge of a vehicle body and a trunk lid.

BACKGROUND OF THE INVENTION Conventional automotive weather strips of this type include, for example, Japanese Patent Laid-Open No. 64-226, which was previously filed by the present applicant.
The one described in Publication No. 51 and the like is known.

To explain the outline based on FIGS. 3A and 3B, a hollow sponge rubber seal portion 2 is provided on the upper piece 1a of a substantially U-shaped solid rubber welt 1, which is the main body of the weatherstrip. Both sides of welt 1 lb, lc
A plurality of inwardly protruding clamping lips 3, 4.5 on opposing surfaces
is provided. Also, one side piece 1 on the outside of the vehicle of the welt 1
A seesaw lip body 6 is provided on the lower edge of b,
This seesaw lip body 6 is connected linearly and integrally to a retaining lip 7 that cooperates with the clamping lips 3 to 5 to clamp a rising flange portion 10 provided at the opening edge of the vehicle body, and an outer edge of the retaining lip 7. It is composed of a sub-lip 8 for draining. The vicinity of the connection point between the holding lip 7 and the sub-lip 8 is connected to the lower end edge of the one side piece 1b by a thin connecting portion 9 along the longitudinal direction.

Therefore, the welt 1 is
When inserted by pressing, each clamping lip 3°4.5. Not only can the holding lip 7 provide pinching support, but also the tip 7a of the holding lip 7 of the seesaw lip body 6 comes into pressure contact with the outer surface 10a of the flange 10, so that the entire sheen lip body 6 presses against the connecting portion 9. outward as a fulcrum (in the direction of the arrow a)
Rotates and tilts easily. Therefore, the insertability of the welt l into the flange portion 10 is improved. On the other hand, as mentioned above, the sub-lip 8 rotates inward (in the direction of the arrow b) due to the reaction force of the rotation of the holding lip 7, and when the insertion is completed, the sponge rubber tip 8a reaches the vehicle body opening end surface 10c. Strong contact improves sealing performance at the edge of the vehicle body opening.

Problems to be Solved by the Invention However, in the conventional automobile weather strip, since the sheen lip body 6 is relatively easily rotated via the connecting portion 9, the flange portion There is a risk that the entire seesaw lip body 6 may rotate excessively when inserted into the seesole lip body 10. For this reason, not only the pressure force exerted by the retaining lip 7 against the outer surface 10a of the flange portion is reduced, but also the flexible tip 8a of the sub-lip 8 is
As shown in FIG. 2, it partially bends inward, causing a curling phenomenon, and a gap is generated between it and the vehicle body opening end surface 10C. As a result, the sealing performance of the holding lip 7 and the sub-lip 8 against the opening edge of the vehicle body is significantly reduced, making it easier for water, dust, etc. to enter.

Means for Solving the Problems The present invention was devised in view of the actual situation of the conventional weather strike IJ knob, and in particular, the back side of the retaining lip of the seesaw lip body or one side outside the vehicle in the direction of tilting of the retaining lip. A feature is that a protrusion is provided on the inner surface of the piece to regulate the tilting position.

According to the present invention having the above configuration, when the main body is pushed into the flange portion, the tip of the retaining lip of the sheen lip body comes into contact with one side of the flange portion, and the entire sheen lip body rotates about the connecting portion as a fulcrum. For example, at a predetermined position where the back surface of the holding lip abuts against the protrusion on one side, further rotation of the entire sheen lip body is reliably regulated. Therefore, the holding lip is strongly pressed against one side of the flange part by the elastic spring reaction force of the protrusion, and the sub-lip is also prevented from tilting more than necessary, thereby preventing bending inward.

EXAMPLES Hereinafter, examples of the automobile weather strip according to the present invention will be described in detail with reference to the drawings. Incidentally, since the basic configuration of this embodiment is the same as that of the conventional example, common parts are given the same reference numerals and repeated explanation will be omitted.

That is, FIGS. 1A and 1B show a first embodiment of the present invention,
In the figure, 1 is the welt which is the main body of the weather strip, 2 is the hollow sponge rubber seal part, and 3°4.5 is the welt 1.
6 is a sheen lip body connected to the lower edge of the outer side piece 1b of the welt 1 via a thin connection part 9. The sheen lip body 6 is composed of a retaining lip 7 protruding inwardly from the welt 1, and a sub-lip 8 for draining that is continuously and integrally connected to the outer edge of the retaining lip 7 in a substantially straight line. ing.

The outer side clamping lip 5 provided above the holding lip 7 has a tip 5a formed of sponge rubber. Also,
The tip portion 8a of the sub-lip 8 that comes into contact with the vehicle body opening end surface 10c is also formed of sponge rubber. On the other hand, the holding lips 7 are provided at a lower height position than the substantially opposing holding lips 4 on the inside of the vehicle, and are vertically offset from each other.

A retaining lip 7 is provided on the lower inner surface of the vehicle outer side piece 1b of the welt 1, that is, on the inner surface at a position substantially directly above the connecting portion 9.
A protrusion 11 is provided along the longitudinal direction for regulating the maximum tilting position. The protrusion 11 is integrally made of solid rubber made of the same material as the one side piece 1b, has relatively high rigidity, and has a substantially semicircular cross section.

Therefore, according to the present embodiment, when attaching the weserstorinop to the vehicle body as shown in FIG. 1B,
When the welt 1 is opened and pushed into the rising flange part 10 from the -1 side, the clamping lip 4 and the holding lip 7 are bent first, and then the clamping lips 5 and 6 are bent to the -1 side and both sides 10a of the flange part 10 are bent. , lOb is held, and at the same time as the holding lip 7 is warped, the entire seesaw lip body 6 rotates and tilts clockwise (in the direction of the arrow a) in the °C diagram using the connecting portion 9 as a fulcrum. At this time, the holding lip 7
As shown in Figure B, further tilting is reliably regulated at a predetermined position where the back surface 7b near the base hits the protrusion 11. Therefore, excessive movement of the entire seesaw lip body 6 is restricted, and the tip end 7a of the retaining lip 7 is connected to the projection 11.
The elastic spring reaction force causes the outer surface of the flange portion 10 to be strongly
At the same time, the sub-lip 8 also presses against the tip 8.
Partial inward bending of the tip 8a is prevented, and the entire tip 8a is uniformly pressed against the vehicle body opening end surfaces 10c-, I- to be in close contact. Therefore, the double seal between the holding lip 7 and the sub-lip 8 provides a reliable and reliable sealing action.

Further, since the tip s5a of the clamping lip 5 on the upper part of the retaining lip 7 is a sponge comb, sufficient adhesion to the outer surface]Oa can be obtained, and the sealing performance can be further improved.

Further, by rotating the seesaw lip body 6 until the retaining lip 7 is restricted by the protrusion 11, the frictional force of the retaining lip 7 against the flange 10 is reduced, and the insertability of the welt 1 is improved. Since the holding lip 7 and the opposing clamping lip 4 are vertically offset from each other,
Coupled with the seesaw action, the ease of insertion into the flange portion 10 is further improved.

FIG. 2 shows a second embodiment of the invention, in which:
A protrusion 12 for regulating the tilting position is integrally provided approximately at the center of the rear surface 7b of the holding lip 7. Therefore, when the holding lip 7 is tilted at a predetermined position, the tip of the protrusion 12 is
When the retaining lip 7 hits the inner surface of the retaining lip 7, further tilting thereof is restricted. Therefore, the same effects as in the first embodiment can be obtained.

It should be noted that the present invention is not limited to the above-mentioned embodiments. For example, it is also possible to provide protrusions on both the holding knob 7 and the one side piece 1b, and in this case, the protrusions may be arranged facing each other.
Further, it is also possible to set the retaining lip 7 in an offset manner. When the retaining lip 7 is arranged in an offset manner, the tilting movement of the holding lip 7 can be more reliably controlled.

Further, by changing the lower position of the protrusion 11.12, the tilting angle position of the holding lip 7 can be arbitrarily set.

Effects of the Invention As is clear from the above explanation, according to the automotive weather strip according to the present invention, the seesaw action of the seesaw lip body not only improves the ease of insertion into the flange portion of the main body, but also improves the ease of insertion into the flange portion of the main body. Since the excessive rotation of the required amount of 2 is restricted by the protrusion, the adhesion force of the retaining lip to the flange part and the side surface increases, and
Partial inward curling of the tip of the sub-lip is prevented, resulting in uniform close contact with the opening end surface of the vehicle body. As a result, a reliable and highly reliable sealing effect is achieved by the double seal of the holding lip and the sub-lip, and the intrusion of water, dust, etc. is reliably prevented.

[Brief explanation of drawings]

FIG. 1A is a cross-sectional view showing a first embodiment of an automobile weather strip according to the present invention, FIG. 1B is an explanatory diagram showing the operation of this embodiment, and FIG. 2 is a second embodiment of the present invention. FIG. 3A is a cross-sectional view showing a conventional weather strip, and FIG. 3B is an explanatory view showing the operation of the conventional weather strip. 1...Welt (main body), lb, lc...both sides,
3.4.5... clamping lip, 6... scene lip body,
7... Holding lip, 7b... Back side, 8... Sub lip, 9... Connecting part, 10... Flange part, 10
a...Outer surface, 11. ．． 12... Protrusion. Unexamined Japanese Patent Publication No. 3 204357 (5)

Claims (1)

[Claims] (1) Clamping lips are provided on the inner surfaces of both sides of the approximately U-shaped main body to protrude inward from each other and clamp the flange portion of the vehicle body opening edge, and the clamping lips are provided on the edge of one side of the vehicle exterior side of the body. A seesaw lip body consisting of a retaining lip that works together with the lip to clamp the flange portion and a sub-lip for draining that is connected approximately linearly to the outer edge of the retaining lip is tiltably connected via a thin connecting part. A weather strip for an automobile, characterized in that a protrusion for regulating the tilting position is provided on the back surface of the retaining lip or on the inner surface of one side piece on the outside of the vehicle in the tilting direction of the retaining lip.